GEM 1235 Manuel utilisateur
GEMÜ 1235
24V / IO-Link, 3E, 4E
Electrical position indicator
Operating instructions
EN
further information
webcode: GW-1235
All rights including copyrights or industrial property rights are expressly reserved.
Keep the document for future reference.
© GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG
16.11.2022
www.gemu-group.com2 / 26GEMÜ 1235
24V / IO-Link, 3E, 4E
Contents
1 General information ............................................. 4
1.1 Information .................................................... 4
1.2 Symbols used ................................................ 4
1.3 Warning notes ............................................... 4
2 Safety information ............................................... 6
3 Product description ............................................. 7
4 GEMÜ CONEXO .................................................... 10
5 Correct use .......................................................... 10
6 Order data ........................................................... 11
7 Technical data ..................................................... 12
8 Dimensions .......................................................... 13
9 Manufacturer's information .................................. 14
9.1 Delivery .......................................................... 14
9.2 Packaging ...................................................... 14
9.3 Transport ....................................................... 14
9.4 Storage ........................................................... 14
10 Assembly and installation .................................... 14
10.5 Mounting kit assembly (quarter turn actu-
ator) ................................................................ 15
11 Electrical connection ........................................... 18
12 Programming the end positions ........................... 18
12.2 Initialization of the end positions via IO-
Link ................................................................. 20
12.3 End position programming via program-
ming input (pin 5) .......................................... 20
13 Troubleshooting .................................................. 21
14 Inspection and maintenance ................................ 23
15 Disassembly ........................................................ 23
16 Disposal .............................................................. 23
17 Returns ................................................................ 23
18 Declaration of conformity according to 2014/30/
EU (EMC Directive) ............................................... 24
19 UL certificate ....................................................... 25
GEMÜ 1235
24V / IO-Link, 3E, 4E
www.gemu-group.com 3 / 26
www.gemu-group.com4 / 26GEMÜ 1235
24V / IO-Link, 3E, 4E
1 General information
1 General information
1.1 Information
- The descriptions and instructions apply to the standard versions. For special versions not described in this document the ba-
sic information contained herein applies in combination with any additional special documentation.
- Correct installation, operation, maintenance and repair work ensure faultless operation of the product.
- Should there be any doubts or misunderstandings, the German version is the authoritative document.
- Contact us at the address on the last page for staff training information.
1.2 Symbols used
The following symbols are used in this document:
Symbol Meaning
Tasks to be performed
Response(s) to tasks
– Lists
The following LED symbols are used in the documentation:
Symbol LED conditions
Off
Lit (on)
Flashing
1.3 Warning notes
Wherever possible, warning notes are organised according to the following scheme:
SIGNAL WORD
Type and source of the danger
Possible
symbol for the
specific
danger
Possible consequences of non-observance.
Measures for avoiding danger.
Warning notes are always marked with a signal word and sometimes also with a symbol for the specific danger.
The following signal words and danger levels are used:
DANGER
Imminent danger!
▶Non-observance can cause death or severe injury.
WARNING
Potentially dangerous situation!
▶Non-observance can cause death or severe injury.
CAUTION
Potentially dangerous situation!
▶Non-observance can cause moderate to light injury.
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24V / IO-Link, 3E, 4E
NOTICE
Potentially dangerous situation!
▶Non-observance can cause damage to property.
The following symbols for the specific dangers can be used within a warning note:
Symbol Meaning
Danger of explosion!
1 General information
www.gemu-group.com6 / 26GEMÜ 1235
24V / IO-Link, 3E, 4E
2 Safety information
2 Safety information
The safety information in this document refers only to an individual product. Potentially dangerous conditions can arise in com-
bination with other plant components, which need to be considered on the basis of a risk analysis. The operator is responsible
for the production of the risk analysis and for compliance with the resulting precautionary measures and regional safety regula-
tions.
The document contains fundamental safety information that must be observed during commissioning, operation and mainten-
ance. Non-compliance with these instructions may cause:
- Personal hazard due to electrical, mechanical and chemical effects.
- Hazard to nearby equipment.
- Failure of important functions.
- Hazard to the environment due to the leakage of dangerous substances.
The safety information does not take into account:
- Unexpected incidents and events, which may occur during installation, operation and maintenance.
- Local safety regulations which must be adhered to by the operator and by any additional installation personnel.
Prior to commissioning:
1. Transport and store the product correctly.
2. Do not paint the screws and plastic parts of the product.
3. Carry out installation and commissioning using trained personnel.
4. Provide adequate training for installation and operating personnel.
5. Ensure that the contents of the document have been fully understood by the responsible personnel.
6. Define the areas of responsibility.
7. Observe the safety data sheets.
8. Observe the safety regulations for the media used.
During operation:
9. Keep this document available at the place of use.
10. Observe the safety information.
11. Operate the product in accordance with this document.
12. Operate the product in accordance with the specifications.
13. Maintain the product correctly.
14. Do not carry out any maintenance work and repairs not described in this document without consulting the manufacturer
first.
In cases of uncertainty:
15. Consult the nearest GEMÜ sales office.
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24V / IO-Link, 3E, 4E
3 Product description
3.1 Construction
1
2
4
3
5
Item Name Materials
1 Housing cover PPR
2 Housing base PVDF
3 Electrical connection PVDF
4 Adapter piece PVDF
5 Mounting kit, valve specific Stainless steel
Seals EPDM, PUR
3 Product description
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24V / IO-Link, 3E, 4E
3 Product description
3.2 LED displays
3.2.1 Status LEDs
As well as the electrical position feedback and error analysis a visual signal is emitted by LEDs that can be seen from above.
CLOSED
ERROR
OPEN
PWR/COM
FAU LT
LED Colour Function
Standard 1) Inversed 2)
FAULT red red Communication error
PWR/COM green green Power / communication
CLOSED green orange Process valve in CLOSED posi-
tion
ERROR red red Error
OPEN orange green Process valve in OPEN posi-
tion
High visibility LED green orange Process valve in CLOSED posi-
tion
orange green Process valve in OPEN posi-
tion
Alternating green/orange Alternating green/orange Programming mode
Flashes orange Flashes orange Error
Flashes green Flashes green Location function*
*The location function is used for the optical identification of a device in a plant. In this case, all high visibility LEDs flash green.
The location function can always be started and overrides all other flash codes of the high visibility LEDs.
The rest of the device function is not affected..
1) Device version
Code 3E: Open/Closed position feedback, programming input, high visibility optical position indicator, IO-Link communication
Code 3S: Open/Closed position feedback, high visibility optical position indicator
2) Device version
Code 4E: Open/Closed position feedback inversed, programming input, high visibility optical position indicator, IO-Link communication
Code 4S: Open/Closed position feedback inversed, high visibility optical position indicator
For order codes see chapter "Order data"
3.2.2 LED conditions
Function CLOSED ERROR OPEN High visibility LED
Valve in OPEN position
Valve in CLOSED position
Programming mode
OPEN / CLOSED flash alternately flashes alternately
LED conditions
lit (on) ~ irrelevant flashes off
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24V / IO-Link, 3E, 4E
3.3 Description
The GEMÜ 1235 electrical position indicator is suitable for installation on pneumatically operated linear actuators and, with spe-
cific mounting parts, likewise suitable for pneumatically operated quarter turn actuators as well as further selected actuator ver-
sions. The position of the valve spindle is reliably electronically detected and evaluated using play-free and non-positive mount-
ing. Intelligent microprocessor-controlled functions facilitate commissioning and support during operation. The current position
of the valve is displayed via high-visibility LEDs and fed back via electrical signals.
3.4 Function
The GEMÜ 1235 electrical position indicator shows the position of the valve. When the valve is opened, the spindle in the elec-
trical position indicator moves upwards and indicates that the valve is OPEN using the high visibility LEDs and communication
interface. When the valve is closed, the spring in the mounting kit pushes the spindle in the electrical position indicator down-
wards and indicates that the valve is CLOSED using the high visibility LEDs and communication interface.
3.5 Product label
Device version Design in accordance with order data
Item bumber Traceability number Serial number
Device-spezific data
Year of manufacture
The manufacturing month is coded under the traceability number and can be requested from GEMÜ. The product was manufac-
tured in Germany.
3 Product description
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24V / IO-Link, 3E, 4E
4 GEMÜ CONEXO
4 GEMÜ CONEXO
Order variant
In the corresponding design with CONEXO, this product has an RFID chip (1) for electronic identification purposes. The position
of the RFID chip can be seen below. The CONEXO pen helps read out information stored in the RFID chips. The CONEXO app or
CONEXO portal is required to view this information.
1
For further information please read the operating instructions for CONEXO products or the CONEXO datasheet.
Products such as the CONEXO app, the CONEXO portal and the CONEXO pen are not included in the scope of delivery and need
to be ordered separately.
5 Correct use
DANGER
Danger of explosion!
▶Risk of death or severe injury
●Do not use the product in potentially explosive zones.
WARNING
Improper use of the product!
▶Risk of severe injury or death
▶Manufacturer liability and guarantee will be void
●Only use the product in accordance with the operating conditions specified in the contract documentation and in this docu-
ment.
The product is not intended for use in potentially explosive areas.
The product is designed for fitting to a GEMÜ valve in order to detect the position of linear actuators visually and electrically.
The product has a microprocessor controlled intelligent position sensor as well as an analogue travel sensor system (poten-
tiometer) which is positively connected with the actuator spindle by means of a mounting kit (spring, operating bush). The valve
end positions and the integrated travel sensor can be controlled via the electrical connections.
●Use the product in accordance with the technical data.
Ce manuel convient aux modèles suivants
2
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